How to register for VAT as a limited company
This guide is written for UK limited company directors who need to understand when VAT registration is required, how the process works, and what decisions to make along the way. By the end, you will know exactly what to do — and what to watch out for. Allow around 10 minutes to read in full.
What you need to know
- Limited companies are not automatically VAT-registered — you must apply when your taxable turnover triggers the threshold.
- The current VAT registration threshold is £90,000 in rolling 12-month taxable turnover, as of 2026/27.
- You must register within 30 days of exceeding the threshold, or risk penalties and backdated VAT liability.
- Registration is done online via HMRC’s Government Gateway — you will need your company registration number, UTR, and bank details.
- Voluntary registration is available below the threshold and can be financially beneficial depending on your customers and costs.
Why VAT registration matters for limited companies
One of the most common questions new limited company directors ask is whether they need to register for VAT — and if so, how. It is a fair question, because forming a limited company through Companies House does not automatically enrol you for VAT. The two processes are entirely separate.
Knowing how to register for VAT as a limited company matters for a straightforward reason: getting it wrong is expensive. Register too late and HMRC will charge penalties and require you to account for VAT on sales you have already made — even if you did not collect it from customers at the time. Register unnecessarily early and you may create administrative obligations that do not yet make commercial sense.
This guide walks through when registration is required, when it is simply available, what information you need to complete the process, which VAT scheme is likely to suit your business, and where things commonly go wrong. Whether you are approaching the £90,000 threshold or considering voluntary registration, the goal is to give you a clear picture so you can act confidently — and on time.
Do limited companies have to register for VAT?
No — forming a limited company does not automatically trigger VAT registration. VAT is a separate obligation, and whether your company needs to register depends entirely on your taxable turnover.
Mandatory registration
You are legally required to register for VAT when your company’s taxable turnover exceeds £90,000 in any rolling 12-month period. This is not a calendar-year figure — it is calculated on a rolling basis, looking back over the previous 12 months at any point in time. That distinction catches a lot of businesses out.
There is also a forward-looking trigger: if you have reasonable grounds to believe your taxable turnover will exceed £90,000 within the next 30 days alone — for example, because you have just signed a large contract — you must register immediately, without waiting for the money to come in.
Voluntary registration
If your turnover is below the threshold, you can still register voluntarily. This is often worth considering if:
- Your customers are VAT-registered businesses who can reclaim the VAT you charge, so your pricing remains competitive.
- You incur significant VAT on your own purchases and want to reclaim it.
- You want your company to appear more established to larger clients or corporate buyers who expect a VAT number.
Voluntary registration is not always the right call. If most of your customers are individuals or small businesses that cannot reclaim VAT, adding 20% to your prices will affect your competitiveness. Think carefully about your customer base before registering early.
Taxable turnover: what counts?
Taxable turnover includes all sales of goods and services that are subject to VAT at the standard rate (20%), reduced rate (5%), or zero rate (0%). It does not include exempt supplies — things like insurance, financial services, or certain educational services. If your company makes a mix of taxable and exempt sales, only the taxable portion counts toward the threshold.
The VAT registration threshold and timing rules
The threshold and the timing rules are the two things that trip up the most limited company directors. Getting both right protects you from avoidable penalties.
The £90,000 threshold
As of the 2026/27 tax year, the VAT registration threshold remains at £90,000. This figure applies to rolling 12-month taxable turnover — not your financial year, not the tax year, and not a calendar year. You need to check it continuously, not just once a year at year-end.
A useful habit is to review your cumulative 12-month taxable turnover at the end of each month. If you are growing steadily, you want to see the threshold coming before you hit it, not after.
The 30-day registration deadline
Once your rolling 12-month taxable turnover has exceeded £90,000, you have 30 days from the end of that month to notify HMRC and register. Your effective date of registration will then be the first day of the month following the one in which you exceeded the threshold.
For example: if your turnover crosses £90,000 during April 2026, you must register by 30 May 2026. Your VAT registration will be effective from 1 May 2026 — meaning you are liable to account for VAT on all sales made from that date, even if you have not yet received your VAT number.
The forward-looking rule
If at any point you have a reasonable expectation that turnover will exceed £90,000 within the next 30 days — regardless of what has happened in the previous 12 months — the registration deadline is the end of that 30-day window, and the effective date is the day that expectation arose. This rule tends to apply when a single large contract or project pushes a company over the threshold in a short burst.
Both rules can apply simultaneously. It is worth being aware of both so you are not caught out by rapid growth.
What information you need to register
VAT registration for a limited company is completed online through HMRC’s Government Gateway. Before you start, it is worth gathering everything you need, because an incomplete application can cause delays.
Company and tax information
- Company Registration Number (CRN) — issued by Companies House when you formed the company.
- Unique Taxpayer Reference (UTR) — your company’s Corporation Tax reference, issued by HMRC after incorporation.
- Business bank account details — sort code and account number for the company’s main account.
- Details of any existing HMRC registrations, including PAYE schemes if relevant.
Turnover information
- Your actual taxable turnover for the past 12 months (or the period since you started trading if shorter).
- Your best estimate of taxable turnover for the next 12 months.
Be accurate with these figures. HMRC uses them to assess the most appropriate VAT scheme for your business and to verify that you meet the registration conditions.
Business activity details
You will be asked to describe what your company does — broadly, the nature of your trade or industry. You will also need to indicate whether you expect to make any sales outside the UK, as this affects how certain VAT rules apply.
After you submit
Once your application is processed, HMRC will issue a 9-digit VAT registration number. You will also need to set up a VAT online account (or use your existing Government Gateway account) to submit future VAT returns. Processing typically takes a few weeks, though this can vary. Importantly, you cannot show a VAT number on invoices until you have received it — but you can adjust your prices in anticipation of being registered, and you can issue VAT invoices retrospectively once the number arrives.
Choosing the right VAT scheme for your company
Registering for VAT is only part of the decision. You also need to choose which VAT accounting scheme to use — and the choice has a real impact on cash flow, administration, and in some cases the amount of VAT you actually pay.
Standard VAT accounting
Under the standard scheme, you charge VAT on sales and reclaim VAT on purchases, filing a VAT return (typically quarterly) showing the difference. This is the default and suits most businesses with relatively straightforward income and expenditure. If your taxable turnover exceeds £150,000, this is generally where you will end up.
Flat Rate Scheme
The Flat Rate Scheme (FRS) is available to businesses with taxable turnover below £150,000. Instead of calculating the exact VAT on each sale and purchase, you pay HMRC a fixed percentage of your gross (VAT-inclusive) turnover. The percentage varies by industry — for example, IT contractors may pay a different rate than management consultants or tradespeople. The appeal is simplicity, and for some businesses it results in paying slightly less VAT overall. For others, particularly those with high VAT-able costs, it may cost more than the standard scheme. It is worth modelling both before choosing.
Cash Accounting Scheme
Under cash accounting, you account for VAT based on when you actually receive or make payments, rather than when invoices are issued. This is useful if you have customers who are slow to pay, as it means you do not pay VAT to HMRC before you have collected it from the customer. Available to businesses with taxable turnover up to £1.35 million.
Annual Accounting Scheme
This allows you to submit just one VAT return per year, with advance payments made quarterly based on an estimate. It reduces the administrative burden of quarterly filings and suits businesses with predictable turnover. Available to businesses with taxable turnover up to £1.35 million.
The right scheme depends on your turnover level, the nature of your customers and suppliers, and how much VAT you incur on costs. If you are unsure, it is worth taking advice before you register — it is easier to choose correctly upfront than to switch later.
VAT and Making Tax Digital: what limited companies need to know
Since April 2019, all VAT-registered businesses with taxable turnover above the registration threshold have been required to keep digital VAT records and submit VAT returns using compatible software under Making Tax Digital (MTD) for VAT. From April 2022, this was extended to all VAT-registered businesses — meaning even those who registered voluntarily below the threshold are now within scope.
What MTD for VAT requires
In practice, MTD for VAT means you must:
- Keep your VAT records digitally — spreadsheets can qualify if they are linked to compatible bridging software, but manual records do not.
- Submit your VAT returns directly from that software via an HMRC-recognised API connection — you cannot enter figures manually into the Government Gateway.
Compatible software
The most straightforward way to comply is to use cloud accounting software such as Xero, QuickBooks Online, or FreeAgent. These platforms maintain the required digital records automatically as you record transactions and connect directly to HMRC for VAT submissions. Many accountants — including our team at Edward Harris — include software as part of their service, which means compliance is handled without you needing to think about it separately.
Why this matters at registration
When you register for VAT, you are not just signing up for a number — you are committing to an ongoing compliance obligation. Choosing software and setting it up correctly from day one saves significant hassle later. If you are registering for the first time, this is the moment to get your bookkeeping infrastructure right, not an afterthought.
How to register for VAT: step by step
Here is the process for registering a limited company for VAT online via HMRC’s Government Gateway, from preparation through to your first return.
Check whether you need to register
Review your rolling 12-month taxable turnover. If it has exceeded £90,000 — or you expect it to within the next 30 days — registration is mandatory. If you are below the threshold, consider whether voluntary registration makes commercial sense given your customer base and input costs.
Gather your documents and information
You will need your company registration number, Corporation Tax UTR, company bank account details, and turnover figures for the past 12 months plus an estimate for the next 12 months. Have these to hand before starting the application to avoid interruptions mid-way through.
Log in to Government Gateway
Go to HMRC’s online services at gov.uk and sign in to your Government Gateway account using your company’s credentials. If you do not yet have an account, you will need to create one. Select ‘Register for VAT’ from the business tax account dashboard.
Complete the VAT1 online application
Work through the online form, providing your company’s trading details, business activity, turnover figures, and the reason for registration (mandatory or voluntary). You will also be asked which VAT accounting scheme you wish to use — standard, flat rate, cash accounting, or annual accounting.
Receive your VAT registration number
HMRC will process your application and issue a 9-digit VAT registration number, typically within a few weeks. You cannot show this number on invoices until you have received it, but you can note to customers that a VAT number is pending and issue a VAT invoice retrospectively once it arrives.
Set up MTD-compatible software and file returns
Once registered, set up Making Tax Digital-compatible software to keep digital records and submit VAT returns. Your first return will cover the period from your effective date of registration. Keep on top of quarterly deadlines — returns and payments are generally due one month and seven days after the end of each VAT period.
Common mistakes to avoid
These are the errors that most frequently cause problems for limited company directors registering for VAT — or failing to register in time.
Using annual figures instead of rolling 12 months
The threshold is not based on your financial year or the tax year — it is a rolling 12-month calculation. Many directors check their annual accounts once a year and conclude they are safely below £90,000, when a rolling check at any given month would have shown them over. Review your cumulative turnover monthly if you are approaching the threshold.
Registering late and underestimating the cost
Late registration means HMRC can assess VAT on sales going back to your effective date — even if you never charged VAT to customers. On top of that, penalties start at a minimum of £100 and can rise to 2–15% of the unpaid VAT depending on how late you are. The cost of late registration almost always exceeds the cost of registering on time.
Choosing the wrong VAT scheme at registration
Opting for the Flat Rate Scheme without modelling whether it actually saves money for your specific business is a common error. It works well for some service businesses with low VAT-able costs, but for others — particularly those with significant purchases — the standard scheme results in a lower VAT bill. Take a few minutes to compare the two before you submit.
Not setting up MTD-compatible software from day one
Registering for VAT without simultaneously setting up compliant digital bookkeeping creates an immediate problem — you are legally required to keep digital VAT records under Making Tax Digital from the point of registration. Retrospectively migrating paper or spreadsheet records to software is time-consuming. Sort the software before or at the point of registration, not afterwards.
When professional help makes sense
For a straightforward limited company with a clear-cut turnover position and a simple business model, the online registration process is manageable to complete yourself. HMRC’s guidance is reasonably clear, and the Government Gateway application is not especially complex.
That said, there are situations where getting professional advice before — or during — registration pays for itself quickly:
- You are near the threshold and unsure whether you have crossed it. Calculating rolling 12-month taxable turnover correctly, particularly where your business makes both taxable and exempt supplies, is easy to get wrong.
- You are choosing between VAT schemes. The difference between the Flat Rate Scheme and standard accounting can be hundreds or thousands of pounds per year, depending on your margins and costs. A quick conversation with an accountant before you choose can be valuable.
- Your registration is already late. If you believe you should have registered earlier, getting professional help to manage the disclosure and minimise penalties is almost always worth it.
- You are restructuring, have overseas customers, or deal in mixed taxable and exempt supplies. These add complexity that generic guides do not fully address.
If any of these apply to your situation, we are happy to help — no pressure, and the initial conversation is free.
Related guides and services
Further reading on VAT registration, bookkeeping, and tax compliance for UK limited companies.
Frequently asked questions
Does forming a limited company automatically register it for VAT?
No. Incorporating a limited company with Companies House and registering for VAT are entirely separate processes. HMRC does not automatically enrol your company for VAT when it is formed. You must register separately, either because your taxable turnover has exceeded the £90,000 threshold or because you choose to register voluntarily.
What is the VAT registration threshold for limited companies in 2026?
The VAT registration threshold for 2026/27 is £90,000 in taxable turnover over any rolling 12-month period. This threshold has remained unchanged for several years. Once your company’s taxable turnover exceeds this figure, registration becomes mandatory and must be completed within 30 days of the month-end in which you exceeded it.
How long does it take to get a VAT number after registering?
HMRC typically processes VAT registration applications within a few weeks, though processing times can vary. During this period your effective date of registration still stands, meaning you are liable for VAT from that date even before your number arrives. You can adjust your prices to account for VAT in the interim and issue VAT invoices retrospectively once your number is confirmed.
Can a limited company register for VAT voluntarily below the threshold?
Yes. Any VAT-registered business — or one that makes taxable supplies — can register voluntarily regardless of turnover level. Voluntary registration allows you to reclaim VAT on purchases and can make your business appear more established to larger clients. Whether it is the right decision depends on your customer base: if most of your customers are consumers or non-VAT-registered businesses, adding VAT to your prices could reduce your competitiveness.
What VAT scheme should a new limited company choose?
The most suitable scheme depends on your turnover and cost structure. The Flat Rate Scheme suits many service-based businesses with turnover under £150,000 and low VAT-able expenses. The standard scheme is more appropriate for businesses with higher input VAT costs. Cash accounting helps businesses with slow-paying customers by deferring VAT until payment is received. It is worth comparing options before registering, as switching schemes later requires a separate application.
What happens if a limited company registers for VAT late?
Late registration means HMRC can assess VAT on all sales made from your effective date of registration, even if you never collected VAT from customers at the time. Penalties for late notification start at a minimum of £100 and escalate to between 2% and 15% of the VAT that should have been declared, depending on how late the registration is. In serious cases additional surcharges can apply. Acting promptly — and seeking advice if you think you are already late — limits the damage.
Final thoughts
Registering for VAT as a limited company is not complicated once you understand the rules — but the rules do matter. The £90,000 rolling threshold, the 30-day deadline, and the choice of VAT scheme are the three areas where getting it right (or wrong) makes the most practical difference to your business.
If you are approaching the threshold, the right time to act is before you cross it — not after. A few minutes of planning now avoids the expense and stress of late registration. If you are considering voluntary registration, it is worth modelling the impact on your prices and your customers before committing.
Knowing how to register for VAT as a limited company is the first step. Choosing the right scheme, setting up compliant bookkeeping, and keeping on top of quarterly returns is the ongoing work. If you would like a second opinion on your VAT position, or help getting set up correctly from the start, we are here — and the first conversation costs nothing.